Cluster lamp-socket.



R. B. BENJAMIN. CLUSTER LAMP SOCKET. APPLICATION FILED JULY 1a. 1907.

Patented Aug; 24, 1909.

i fg 5 SHEETS-SHEET 1. IWQ'I/, I

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R. B. BENJAMIN.

CLUSTER LAMP SOCKET. APPLIUATION FILED JULY 1a, 1907.

93 1,722, v Patented Aug. 24, 1909.

5 SHEETS-SHEET 2.

R. B. BENJAMIN. CLUSTER LAMP SOCKET. APPLICATION FILED JULY 18, 1907.

Patented Aug. 24. 1909.

5 SHEETS-SHEETS.

R. BI BENJAMIN. CLUSTER LAMP SOCKET. APPLICATION IILLD JULY 1s. 1907.

Patented Aug. 24. 1909.

R. B. BENJAMIN. CLUSTER LAMP SOCKET. APPLICATION FILED JULY 18, 1907.

Patented Aug. 24. 1909.

5 SHEETS-SHEET 5.

' 10 part of this specification.

i ivlore particularly, one oll the objects ot my portion ot' the devicein which connection is '5 moved for any reason, as, for instance, for

UNTE@ REUBEN B. BENJAMIN, 0F CHICAGO, ILLINOIS, ASSEGNGR TO ,EENJAHNELETRC HANUFIRIG COMPANY, 0F CHIGAGO, ILLINOIS, A CRPOATION 0F ILLINDIS.

oiiesrns LAMP-soenna?.

saines. specimen of mais men-i; rac-enten aug. ai, ieee.

i Application lcd July 18, 1907. :Serial No. 384,309.

To all lwhom it lmay concern: t vertical sectional view ot a deviceembodying Be it known that l, Rimini-N B. BiiNJitMiN, my invention; Fig.Q ,ffs c.. view, partly in sec- 55 a citizen ot the United States,residingati tion and partly in elevation, of thedevicevvvith hicago, iu`the county of Gooi; and Statexo't the lamp-carrying portion thereofseparated a Illinois, have invented new and usefrl lnk from thesupportingportion; Fie. 3 is a top provcmcnts in Cluster Lamp Societ-s,of plan view ot the supporting cap o? the device; which the following`is a full, clear, concise, i Fig. l is a crossssectionalview of thiscap, 60 and exact description, reference being had i the section beingtaken on the line it-4 of to the accompanyinedrawing, forming a Fig. 3;Fig. 5 is a perspective view of this l cap; Fig. 6 is a bioltenperspective View' of 'lhis invention relates to improvements in ascrew-threaded plate which is secured to cluster lamp sockets, the`general object ott the supporting cap and is adapted to be 65 theinvention beincl the improvement of dei carried upon the lovvei"V end ofa depending vices et this class. pipe or similar conduit; Fig. T is atop plan view of an insulating base which carries the various contactplates and iohiding-screws of the device; Fig. 8 is a bottom plan viewof 70 this insulating base and the parts carried invention is to providea plural lanip-holding` dcvicc `in which the body portion of thestructure, carrying` the lamps, may readilyl be connected with ordisconnected 'from that i i i i i i thereby; Fig. 9 is a centralvertical section l of the insulatingbase and the supporting made withtlieleadingdn conductors or supcap, this section beingtaken on the line9%-19 ply wires. ln devices of this class comi of Fig. 7 g Fig. 10 is aperspective View of a 75 inonly constructed, it is necessary when the lsupporting ring which is secured to the i outer body portion of thedevice is te be rei lamp carrying portion 'of the device and i makesmechanical connection with the saptlie removal` of afshade, todisconnect the ifiorting cap; Figs. 11 and 12 are perspective leading-inwires from .their binding-posts. views of conducting plates; and Fig. 13is 80 By the use ot iny invention this objectioni a sectional viewsimilar to Fig. 1, but showable feature is obviated, the body of the inga form of the device in which the socket readily detached and removedwithoutdisi device and the lamps carried thereby may be i "or the centerdepending lamp is omitted.

40 casing of the device is eliminated.

accomplished in the embodiment of my inln the several tigures of thedrawings, in which like reference numerals indicate the same partethroughout, 15 is a supporting cap. This cap 15 is given the forni ot'an inverted cu p, and is irovided with a central Another object of thepresent invention is opening` for the passage therethrough oftheiprovision ot a device of this class in leading-in wires. Thisopening may be which the danger ot a shock being imparted spanned by aplate 1li (shown detached-in turbine' the electrical connections, andwhen 1 i i i to a. person coming in contact with the einer l* ig. (i)whicn is secured in place on. the cap i l i i i this body portion isreplaced electrical and mechanical connection are made at the saine otime and by the same manual operation.

by screws i7, 17. This supporting plate 16 is formed with a.screivfthreaded.optniing 1Ga and is employed. 'when thcfdcvice is to be95 carried upon the lower end cta depending pipe, but may be cispensedwith when the device is te be secure-d directlyito a ceiling or wall. lnthe latter case the screws 17 will serveto thus secure the devicein'place. 100 The cap 15 is provided with apair of depend- Anotherlobject ot the invention is to provide such a device in which the numberoi lamps which the device will carry may be readily changed at vany timewithout disturbo ing" the clectriral connections or detachinp; from itssupport the partoi! the device which cari-ies the conducting plates, or'removing 2 the "same from its position. This, and such other objects asnia'y hereinafter appear, are

i ing resilient "'lnvers 19, 19, ,these fingers bei provided xwithhooked ends .QUQadapted vention herein described, and shown in thea toengage andpsiistein an insulating base` .21,

accompanying drawings. i 'rnied of porcelain or the l'ilre. This base,195,.

-Int'hese vdrawings Figure ,1 is vcentral i,21 .is providedivithapairfogrooves 'retain J'ne parte m depressions 'einer ends to permit 1..1 the: eioi `any enanges who eem/ee interior ott the and a conductingpart in contact with the metal ot the casing at euch point, the easing,being exterior-ly in eulated, cannot impart a shoclt to a persontouching the same.

The easing and the lamps carr'ed thereby 'ained in place on thesupporting cap by means of a bayonet jointdcvice which comprisee'anannular plate 51 (shown detached. in bip. i) provided withinivardiyprojecting lugs and corresponding derressions in thesupporting,l cap l5. These depressions are preferably three in numberand are fm'med by indenting the leet metal ot the cap The base Q1 iswith grooves 5i coinciding with simijar grooves termed in the cap 1Fleading into the degjireseions 53. The plate 5i. is secured in thecasing 43 t near tine upper portion thereof, and is so disposed in Saidcasing that when the latter is put up 'into piace the lugs 52 on theplate 54 and where-uren the casing is given a rota ...on 'in a ontalplane, causing these lugs to pass around into the depressions 53. vTo

position by preventing baciare drotation, and consequent detahment orthe easing; from the supporting cap, there ie provided upon each of thelugs 52 5t will. up through the grooves;

a leaf spring 56, 'leai2 springs bearing einen 'the upper edges of thedepressions 53 51 downward..

and ,tending to force the plate are made Wider their the plate to dropcbtly and the luge 52 to occupy this defied parier.

on iamp socket in which, bythe more casing in position and mechanicalconnection .is made between this casing and its'snpport, and, at thesame time, electric-al eoimeetien is made between the various lampSockets carried by the dend the parte to which the leading-in e thedevice are eieetrieally eonnected. .u atany time, it be desired tochange the number of lamps carried-by the device, this may'bereadilydone by simply turning the outer casing siightly in` a left-hand direclhereupon this casing may be removed ...mother casing .having a. greateror lesser dier ot ianipl sockets may be substituted Without thenecessity .ot making ver in the electrical conutl retrieving the base ote device irom ite Support. i it is deeired to use e shade with vice sachshade may be readily put in place er removed Without disturbing theelectricai connections'. The base 21 and up porting eap 15 'it will be even that by means ot the invention herein 'described provided a praemgoit the outer 'the imparting thereto of e. slight' rotation,

ot suihciently small (lil casm :mieter to permit taie ordinarycommercial 1 .said rst-named contaet member,

l i l l. l

shade to be passed" up or down over 'these parts Without the removal ofsuch parte from their support.. The shade 57 may res upon the upper edgeof the casing 43, and will be held in place by the usual shadeholdercomprising a. plate 58 having,A downturned edges provided with screws52) for engaging the shade and a Screw t3() adapted to engage the pipe6l which forms the com duit through which the Wires are brought..

ln Fig. 13 1 have shown a form ot the device'in which the central,axially-disposed lamp is dispensed with. -In this case the centerlamp-receivini` shell omitted, and, if desircththe screw 31 and plateiimay also be omitted.

that l claim as new and desire to secure by Letters Patent is:

l. A plural lamp-holding deviceI comprising, in combination, asupporting member, a housing, lamp-receiving socletscarricd by Saidhousing, detachable connection between said supporting member and saidhousino` a plate electrically connected with a` plurality of saidsockets, an insulating base detachably carried by said supportingmember, and a Contact member carried by said base and disposed to engagesaid plate when said housing is secured to said supporting member.

Q. A plural'la'nipdaolding device comprising, in combination, asupporting member, a casing, lamp-holding sockets. carried by saidcasing, detachable connection between said supporting member and saidcasing, a Contact member electrically connected with a. plurality otsaid sockets, an insulating base removably secured to said supportingmember, and a second Contact member carried by said base and disposed toengage said iii-stnamed Contact member when said casing is secured tosaid supporting member.

3. A plural lanip-liolding device comprising` in combination, asupporting member, an insulated casing, lamp-holding devices carried bysaid casing, detachable connection between said supporting,l member andsaid casing, a contact member electrically connected with one ot' theterminals of each ot a plurality ot said'lamp-holding devices, aninsulating base farried by said supporting member and a second contactmember carried by said base .and'disposed to engage said firs -namedcontae'inembcr when said casing is Secured to said supporting member.

4. plural lamp-holding device con1pris' ing, in combination, asupport-m` member," an insulating base carried by said supportingmember, a casing. also carried by said ysupporting member, said base andcasing being independently detachable from said supporting member, acontact member carried by said base, a Contact member carried by saidand dispos d for engagement with and a plurality of lamp-holding devicescarried by said casing and insulated from each other by said easing,said lamp-holding devices having each a' contact electrically connectedto said 'last-named contact member.

A plural lamp-holding device comprising, in combination, a supportingmember, an insulating base carried thereby, a contact plate surroundingsaid base and provided with a binding-screw, a second contact plate alsoprovided with a bindingscrew and carried by said base, said base beingprovided with openings for the passage therethrough ot conductors tosaid binding-screws, a casing ren'lorably secured to said supportingmember and provided with a plurality of lamp-receiving openingssodispose'd that each of the lamps arranged therein will engage with oneof its terminals said firstnamed contact plate, and means whereby, whensaid casing is secured to said supiY fting member, said second-namcdcontact plate is electrically connected. with the other terminal of eachof the lamps.

A plural lamp-holding device comprising, in combination, a supportingmember, a 4lamp- :arrying member, a. series of radiallydisposed socketscarried bysaid lamp-carrying` member, a single socket centrally disposedrelatively to said series ot' sockets, means for detachably securingsaid lampcarrying member lto said supporting` member, an insulating basedetachably secured to said supporting member independently of saidlamp-carrying member, a contact plate carried by said lan'ip-carryingmember and electrically connected with all of said sockets and disposedaxially with said centrallydisposed socket., and a'contact plate locatedupon said base and adapted to engage said first-named plate when saidlamp-carryiup,` member is secured to said supporting member.

7. A plural lamp-holding devicev :emprising, in combination, asupporting member, a lamp-carrying member, a series of radially disposedsockets carried by said lamp-carrying member, a single socket. axiallydisposed relatively to said series of sockets,1neans for detachablysecuring said lamp-carrying member to said supporting member,I aninsulating base 4carried by said support-ing member independently ofsaid lan'ip-carry ing member, a contact plate electrically connectedwith all ofsaid sockets, and a second contact plate located upon saidbase and adapted to engage said rst-named contact plate when saidlampfcarrying member is secured to said supporting member.

8'. A plural4 15mm-holding` device cpmprising, Vin combination, asupporting member, a lamp-carrying member, a series of radially arrangedsockets carried by said lamp-carrying member, a single socket axiallydisposed relatively to said series of sockets, an insuv lating base, acontact member .on said base arranged to form the center contact foreach of said radially-disposed sockets, a separate center contact memberfor said aXially-d1sposed socket, means for connecting supply conductorswith each of said center contact members, a contact plate carried bysaid lam p-carrying membei'and electrically connccted with allotsaid'sockets and another contact plate located upon said base anddisposed to engage said first-named contact plate when saidlamp-carrying member 1s secured to said supporting member.

9. A plural lamp-holding device comprising, in combination, a supportingmember, a lamp-carrying member, aseries of radially disposed socketscarried by and insulated from each other by said lamp-carrying mcmber, asingle socket disposed radially Wit-h relation to said series ofsockets, an insulating base, a center contact member for said singlesocket, a common center Contact member for said series of sockets,another contact member on said base, and means whereby, when saidlamp--carrying member is secured to said supporting member.,` electricalconnection is automatically made between all of said sockets and saidlast-named contact member. l

10. Theccmbination of a supporting cap, a shade having an openingthrough Which said cap may pass, a base carried by said cap and havingbinding vterminals thereon, a body arranged tocarry the lamps, means forsecuring said' .bod-yto said cap independently of said base after theconductors have been secured to the binding terminals, and means -tormaking electrical connection between said binding terminals and thelamps when said body is secured in position.

11. The combination of a supporting member, a lshade having an opening4through which said supporting member may pass, a base capable of beingpassed through said shade, binding terminals on said base, a bodyarranged to carry the lamps and adapted to be secured to said supportingmember after the conductors have been connected to said bindingterminals, and means for electrically connecting said binding terminalswith the lamps when said botly portion is secured in position.

l2. The combination with a Vshade, ot a cap capable of being VI'Jassefdthrough said shade.l a base supported by said cap and also capable otbeing passed through said shade, binding terminals on said base, a bodyarranged to carry 'the lamps, readily detachable means for securing saidbody to said cap, and means for electrically connecting said bindingterminals with the lamps When Said body is in position..

1 13. The combination of' a. cup-shaped cap, a baseA insertible therein,binding ter minalson said base, la body arranged .to

Cap, and eopeiatiug ineens Carried. by siei base noi body for makingeee-ice con nection between said binding niiials o the lamps When saifbody is eeeufel in pialee, 14;. The Combination of a supporting azi-jp,a base oaiiied thereby, e, piumli-y of bine? A. sci-@Ws on said bese,openings ,amending through said base for the pasfsage the hrough ofconductors to Seid binding a Shade adapted to have said base pot'mg oeppassed theet-hiough., e caeiig suppoiing and insoiaing; a pluiaijy olamps, and means Wheioby, wiieii siii-d ing is secured to said supporingeieevtricui Lounectiou is automatically made 1 tween seid binding screwsam?. like 'reim' of the iamps carried by Said easing.

15. Trie combination o', i supperiiiig ce@ and am insulating beseinseited iiio sei@ oep, mean-5 'for detnciabiy ietaii'ing sai ease insaid ci@ fi, lboog; portion miepeai to eaiiy and insulate a, pumity ofempsy'saili body; portion being removably comieeeil 1111i cap, and meansi501' Conducting eiiieit 'ie each o' the lamps corrieri by sal. body ption.

l). A @lumi iampfnoling eviee cempiio ing, in combination, a Supportingsap, body portion arranged to omj he la;

meen@

